CA946003A - Tunnelling means and method - Google Patents

Tunnelling means and method

Info

Publication number
CA946003A
CA946003A CA170,374A CA170374A CA946003A CA 946003 A CA946003 A CA 946003A CA 170374 A CA170374 A CA 170374A CA 946003 A CA946003 A CA 946003A
Authority
CA
Canada
Prior art keywords
tunnelling
tunnelling means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA170,374A
Other versions
CA170374S (en
Inventor
John J. Cowley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cervotec Developments Ltd
Original Assignee
Cervotec Developments Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CA117,202A external-priority patent/CA940943A/en
Application filed by Cervotec Developments Ltd filed Critical Cervotec Developments Ltd
Priority to CA170,374A priority Critical patent/CA946003A/en
Application granted granted Critical
Publication of CA946003A publication Critical patent/CA946003A/en
Expired legal-status Critical Current

Links

CA170,374A 1971-07-02 1973-05-03 Tunnelling means and method Expired CA946003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA170,374A CA946003A (en) 1971-07-02 1973-05-03 Tunnelling means and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA117,202A CA940943A (en) 1971-07-02 1971-07-02 Tunnelling means and method
CA170,374A CA946003A (en) 1971-07-02 1973-05-03 Tunnelling means and method

Publications (1)

Publication Number Publication Date
CA946003A true CA946003A (en) 1974-04-23

Family

ID=25666841

Family Applications (1)

Application Number Title Priority Date Filing Date
CA170,374A Expired CA946003A (en) 1971-07-02 1973-05-03 Tunnelling means and method

Country Status (1)

Country Link
CA (1) CA946003A (en)

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